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Nov 28, 2018 / By System Admin / in Cement & Concrete , FAQ's
Portland cement is composed of calcium silicates and aluminate and aluminum ferrite. It is obtained by blending predetermined proportions limestone clay and other minerals in small quantities which are pulverized and heated at high temperatures of around 1500 degree centigrade to produce clinker. The clinker is then ground with small quantities of gypsum to produce a fine powder called Ordinary Portland Cement (OPC). When mixed with water, sand, and stone, it combines slowly with water to form a hard mass called concrete.
Please refer the cement page on our website www.materialtree.com for the latest price.
PPC is manufactured either by inter-grinding, Portland Cement clinker, fly ash and gypsum to the required fineness or by blending ground OPC with fine fly ash. Fly ash is a by-product in coal-based thermal plants.
Grades 53, 43 and 33 indicate the compressive strength of cement in Newtons for one mm2 area i.e., 53 grade means a compressive strength of 53 N/mm2 attained after a curing period of 28 days. Similarly, 43 and 33 grades may be defined.
There are different types of cement, the most common cement that is supplied are:
The OPC 53 grade cement and PPC cement is usually preferred for concrete purposes.
The OPC 43-grade cement is preferred for plastering.
Mainly there are 4 grades they are the OPC 43 grade, OPC 53 grade, and PPC.
The minimum order quantity is 50 bags.
The minimum curing period required is 15 days.
In the light of the foregoing, it is incur bent on the consumer to do a few basic checks to make sure the quality of the cement is of good quality.
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